A Dynamical Study of the Disordered Quantum p = 2 Spherical Model
نویسنده
چکیده
Michal Rokni and Premala Chandra Chandra Tech Consulting LLC, 123 Harper Street, Highland Park, NJ 08904 Abstract We present a dynamical study of the disordered quantum p = 2 spherical model at long times. Its phase behavior as a function of spin-bath coupling, strength of quantum fluctuations and temperature is characterized, and we identify different paramagnetic and coarsened regions. A quantum critical point at zero temperature in the limit of vanishing dissipation is also found. Furthermore we show analytically that the fluctuation-dissipation theorem is obeyed in the stationary regime, an assumption that is made routinely for more complex glassy models.
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